﻿//
// Created by francklinson on 2021/3/19.
//

#include "stock.h"
#include <iostream>


void Stock::buy(long num, double price)
{
    if (num < 0)
    {
        std::cout << "Number of shares purchased can’t be negative. "
                  << "Transaction is aborted.\n";
    } else
    {
        shares += num;
        share_val = price;
        set_tot();
    }
}

void Stock::sell(long num, double price)
{
    using std::cout;
    if (num < 0)
    {
        cout << "Number of shares sold can’t be negative. "
             << "Transaction is aborted.\n";
    } else if (num > shares)
    {
        cout << "You can't sell more than you have! "
             << "Transaction is aborted.\n";
    } else
    {
        shares -= num;
        share_val = price;
        set_tot();
    }
}

void Stock::update(double price)
{
    share_val = price;
    set_tot();
}

void Stock::show()const
{
    using std::cout;
    using std::ios_base;
    // set format to #.###
    ios_base::fmtflags orig =
            cout.setf(ios_base::fixed, ios_base::floatfield);
    std::streamsize prec = cout.precision(3);

    cout << "Company: " << company
         << " Shares: " << shares << '\n';
    cout << " Share Price: $" << share_val;
    // set format to #.##
    cout.precision(2);
    cout << " Total Worth: $" << total_val << '\n';

    // restore original format
    cout.setf(orig, ios_base::floatfield);
    cout.precision(prec);
}

Stock::Stock(const std::string &co, long n, double pr)
{
    std::cout << "init stock" << std::endl;
    company = co;

    if (n < 0)
    {
        std::cerr << "Number of shares can’t be negative; "
                  << company << " shares set to 0.\n";
        shares = 0;
    } else
        shares = n;
    share_val = pr;
    set_tot();
}

Stock::Stock()
{
    std::cout << "default init" << std::endl;
    company = "no name";
    shares = 0;
    share_val = 0.0;
    total_val = 0.0;

}

Stock::~Stock()
{
    std::cout << "Delete stock object " << company << "!\n" << std::endl;
}

const Stock &Stock::topVal(const Stock &s) const
{
    if (s.total_val > this->total_val)
        return s;
    else
        return *this;
}

